Removing copper from nickel electrolysis anode solution has been a major keypoint in the nickel metallurgy industry. In this study, we proposed a novel process flow to promote removing copper from nickel electrolysis anode solution. A simulated nickel anode solution was designed, and static and dynamic adsorption experiments were conducted to determine the best of solution pH, adsorption time and temperature, resin dosage and particle size, and stirring speed. The optimal conditions were explored for copper removal from nickel electrolysis anode solution. Based on the optimal experimental conditions and the relevant experimental data, a novel process for copper removal from nickel electrolysis anodes was designed and obtained. This novel process of copper removal from nickel electrolysis anodes was confirmed with nickel anolyte solution with nickel 50–60 g/L and copper 0.5 g/L. After finishing the novel process of copper removal, the nickel in the purified nickel anolyte became undetectable and copper concentration was 3 mg/L, the novel process of resin adsorption to remove copper from nickel anode solution through static and dynamic adsorptions has an efficacious copper removal. It is a beneficial supplement to traditional methods.

Waterproof performance of gaskets between segments is the focus of shield tunnels. This paper proposed an analytical method for determining seepage characteristics at tunnel-gasketed joints based on the hydraulic fracturing theories. First, the mathematical model was established, and the seepage governing equation and boundary conditions were obtained. Second, three dimensionless parameters were introduced for simplifying the expressions, and the seepage governing equations were normalized. Third, analytical expressions were derived for the interface opening and liquid pressure. Moreover, the influencing factors of seepage process at the gasketed interface were analyzed. Parametric analyses revealed that, in the normalized criterion of liquid viscosity, the liquid tip coordinate was influenced by the degree of negative pressure in the liquid lag region, which was related to the initial contact stress. The coordinate of the liquid tip affected the liquid pressure distribution and the interface opening, which were analyzed under different liquid tip coordinate conditions. Finally, under two limit states, comparative analysis showed that the results of the variation trend of the proposed method agree well with those of previous research with the minimum error of 0.43%. Overall, the proposed analytical method provides a novel solution for the design of the waterproof in shield tunnels.